A drag racer crosses the finish line doing202 mi>h and promptly deploys her drag chute (the small parachute used for braking). (a) What force must the drag chute exerton the 891-kg car to slow it to 45.0 mi>h in a distance of 185 m?(b) Describe the strategy you used to solve part (a).

A small diamond of mass 13.3 g drops from a swimmer's earring and falls through the water, reaching a terminal velocity of 2.1 m/s.   (a) Assuming the frictional force on the diamond obeys f = −bv, what is b (in kg/s)? (Round your answer to at least four decimal places.)  kg/s   (b) How far (in m) does the diamond fall before it reaches 90 percent of its terminal speed?  m

please answer only using algebra, no calculus

A stray dog catcher drives 34km east, picks up some dogs, then drives 10km west to drop them off before continuing east for 21km. 30N of force is being applied constantly parallel to the dog catcher's motion. Solve for the work the dog catcher has accomplished.

rough surfice Smath swace leeeeed 2.50m he 3.00m E; Ei + WNc A 34.2 kg block slides with a velocity of 10.22 m/s to the right on a frictionless surface (as shown in the figure above). The block slides up a slope to a height of 3.00 m and then slides across a 2.50 m long rough surface with a coefficient of kinetic friction equal to 0.325. The block continues to travel to the right and bumps into a massless spring with a spring constant (k) equal to 2320 N/m. a) How much does the spring get compressed by the block with respect to its equilibrium length? Please answer with a positive number in units of metres, with 3 sig figs. Start with conservation of energy: E, = E; + WNC , and show all steps. b) What is the potential energy stored by the spring when the mass comes to a stop? Please show the symbolic equation and then "plug in the numbers" to give a numerical answer in units of joules with 3 sig figs. c) What happens to the potential energy stored in the spring after the block stops…

The coefficients of friction between the load and the flat-bed trailer shown are 0.35 (static) and 0.30 (kinetic). Knowing that the speed of the rig is 72km/h, determine the shortest distance in meter in which the rig can be brought to a stop if the load is not to shift. 10 ft

You decide to launch a rockof mass m1 using a tube containing a spring of spring constant k. When the spring is at equilibrium, it fills the entire tube. To launch a rock, you push it into the tube, compressing the spring a distance d, at which point a locking mechanism holds the spring(and the rock) in place. When the lockis released, the spring pushes the rock to the end of the tube where it will be launched into the air. The coefficient of kinetic friction between the rock and the inside surface of the tube is given by μk. You setup the launcher at an angle q above the horizontal with the spring end buried such that when the spring is compressed and locked, the rock is at ground level. a)Find the work done on the rock by non-conservative forces as it moves from the point of release to the end of the tube. Express your answer in terms of μk, m1, q, d, and any necessaryconstants. b) Find the velocity of the rockvfas it exits the launch tube in terms of μk, k, m1, q, d, and any…

On September 8, 2004, the Genesisspacecraft crashed in the Utah desert because its parachute did not open.The 210 kg capsule hit the ground at 311 km/h and penetrated the soilto a depth of 81.0 cm. How long did this force last?

John reached a speed of 29 m/s in the downhillskiing competition. Suppose he left the slope at that speed andthen slid freely along a horizontal surface. If the coefficient ofkinetic friction between his feet and the ground was 0.27 andhis final speed was half of his initial speed, find the distance hetraveled.